Validate Textbox To Number Only

Dec 17, 2010

how to validate textbox to be number only by using custom validation, I mean what is the code?

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Web Forms :: How To Validate A Phone Number Textbox

May 7, 2015

How to validate the textboxes to avoid wrong information..for ex: I have a textbox phoneNum in that users can only enter the nums only. how to validate that?

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Web Forms :: Validate A TextBox With A Number & With A Specific Text?

Nov 17, 2010

I've a Textbox

I can enter a Number which is greaterThan "0" or I can enter text which is only "NUMEROUS"


If I enter 0 (or) negetive Number (or) any text other than "NUMEROUS", i must display error msg Like

"Don't Enter 0/Negetive No./text other than "NUMEROUS"

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Web Forms :: Validate Indian Mobile Number In TextBox?

May 9, 2013

i am having a textbox for mobile number.

wt should be the validation expression to show error if user enters 0000000000 or 1111111111 or?

and i want the number to start either form 9 or 8 or 7.

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How To Validate The Maximum Allowed Number Of Characters In A Multiline TextBox

Mar 30, 2010

it's a multiline TextBox the MaxLength property does not work. At the moment I only see the option to use a CustomValidator with checking TextBox1.Text.Length on server side and perhaps in addition some Javascript client side validation.But isn't there a simpler way to do this, using the standard ASP.NET validators (RegularExpressionValidator, RangeValidator, CompareValidator, etc.)

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Web Forms :: Validate Textbox To Enter Only Numbers For Mobile Number

May 7, 2015

How to validate textbox to enter oly numbers for mobile no?

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Web Forms :: Validate Integer (Number) And Float (Decimal) Values In TextBox?

May 9, 2013

i have textbox it should accept only integer or float values..........

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Name Or Number Search In Textbox While Entering The First Letter Or Number Charactor Or Number?

Feb 2, 2010

I am using the and framework 2.0 with Ajax enable web.i have a text box and when user will enter "a" or number in this will search the name started from "a" character or number if he or she enter the number basically we can say live-search.

Employee search: Textbox.In this text box she/he will enter the first character of name or first number of employeeno and according to the a character name will search in list.

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Web Forms :: How To Validate That One Listbox's Number Is Higher Than Or Equal To The Other Listbox's Number

Dec 19, 2010

I have been trying to figure out how to use <asp:requiredfieldvalidator> with ValidationExpression but am having a difficult time understanding the syntax of ValidationExpression. I'd like to make sure one textbox's number (1-12) is equal to or higher than the other textbox's (1-12) number. How is this accomplished and what's the syntax of ValidationExpression (hopefully I'm stating the question correctly).

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Regex - How To Validate ID Number

Sep 7, 2010

I am new at this so be easy on me... :)

I need to validate if a the ID number that the user typed in my site is a valid ID.

How do I check it?

Do I need to use RegularExpressionValidator?

More over, I also need to validate the credit card number, I found a few RegularExpressions for that in the net but each one is different from the other and I am not sure which one to use.. Does anyone know od a working expression that will suit all credit cards?

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Validate After Certain Number Of Postbacks

Oct 18, 2010

I have a peculiar situation at hand in which I need to validate a pair of dates in an ASP.Net web app.This is how my page looks like : I have a "From Date" field which consists a set of three dropdownlists ( for Year , Month and Date) I have a "To Date" field which also consists a set of three dropdownlists ( for Year , Month and Date). There is a "Download Report" button on the screen ( which allows a user to download a report for the specified date range) All these six dropdownlists are wrapped in a user control. Now all the 6 dropdownlists have a default "please select" value. When a user lands on the page for the first time , all dropdownlists are set to "please select". The "Download" button is enabled only after valid 'From' and 'To' dates are selected. Now my requirement is that :

When a user lands on the page for the first time , no attempt to validate the dates should be made until he selects all the 6 dropdownlists at least once. When the 6th dropdownlist is selected , the From and To dates should be validated. Once a user has selected all 6 dropdowns once , subsequently on every dropdownlist postback , the dates should be validated. My Issue: What's the best way to track these 6 distinct postbacks ( for each of the dropdowns) before starting to validate the From and To Dates.
I could maintain a flagin ViewState .. but is there a better way?

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C# - What Are The Condition To Validate A Phone Number

Dec 3, 2010

What are the condition to validate a phone number?

Well firstly it has to be a numerical value, can include the following numbers 0123456789 and the plus symbol. +

But what about the following conditions, where do you get this data?

-It has to be in the format [country dial code + area code + phone number]

-It has to be a min and max length

EDIT: also what is the min and max length of a mobile/cell phone number?

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JQuery :: Validate The Range Of Number?

Sep 13, 2010

How to Validate the Range of Number


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Web Forms :: How To Validate A License Number

Aug 17, 2010

I have requirment to prevent enteries of same number occuring multiple times. Like 99999,1111111, 6666, are invalid. How can I acomplish this? Is there any general license validator funtion some one has writte?

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Web Forms :: TextChanged Event In A Textbox To Validate A Value In Textbox?

May 13, 2010

I aam working with textChanged event in a textbox to validate a value in textbox.hen i am enter data in textbox then press submit button i am getting validation summary before the textbox textchanged event. Is there anyway to fire textchanged event first to validate before button validation summary?

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Datatable Field Validation - How To Validate Port Number

Jul 23, 2010

i have imported data from excel to datatable but i need to validate port no column which should

allow only numeric value and also i need to check the single quotes and need to replace to double quotes.

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Web Forms :: Validate Number For Regular Express Validation?

Mar 28, 2011

how can i validate a textbox with 5 number only are allow to fill in and first number must number 3. For example like 3XXXX,3YYYY (X and Y are number).

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Web Forms :: Validate Indian Mobile Number Format In Windows App

May 7, 2015

How to validate india mobile number format in c# windows application

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C# - How To Give Code To Validate Textbox If The Textbox Not Contains The Value

May 7, 2010

give code to validate textbox if the textbox not contains the value except "mm-dd-yyyy" fromate it shoud display error message.

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Web Forms :: Validate Number Inputed Is Inbetween Ranges Sotred In A SQL Database?

May 26, 2010

I have a SQL database with a table storing three collums. ClientID, StartRange, EndRange.The user needs to add records to a different table - the number being inputted by the user eeds to fall in the range where it is equal to the client he is adding if for. There can be a number of different ranges for a client which where I am falling over, it would be easier if it was just the one range!What is the best way to check this- I was thinking a customer validator method in the code behind?Would I need a Stored Proceedure? or some DataSet Tables and some how parse the ranges?

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Web Forms :: How To Validate A TextBox

Dec 7, 2010

I've 2 textBoxes


if txtQuantity is a positive Number
I must enter something in txtDesc


I can't submit the form without entering txtDesc if txtQuantity is positive/decimal number & No need to enter anything in txtDesc if the txtQuantity is 0/null/empty/space/spaces/blank How?

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How Should Validate DropDown Box And Textbox

Mar 26, 2016

i have been using required field validator to validate textbox and dropdown box in .. how should i validate this dropdownbox and textbox . i simple want if textbox is blank . it needs to show error message . and if all is ok . then it validate .[Code]

public bool checkinput() {
if (TxtName.Text == ""){
RequiredFieldValidator1.ErrorMessage = "User Name cannot be blank";
return false;
if (TxtMobile.Text == "") {
RequiredFieldValidator2.ErrorMessage = "Mobile no cannot be blank";


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MVC Html.textbox - How To Validate Numbers Only

Apr 12, 2010

With the HTML helper, how would you enforce number only without submitting? I know it was done with regular expression if you had a textbox in classic ASP.NET

<%=Html.TextBox("txtYearOfWork",String.Empty, new { maxlength = 4, size="5", autocomplete = "off" }) %>

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Configuration :: Validate A Textbox During Installation

Feb 18, 2011

I am wanting to validate a textbox while creating a setup and deployment project or during installtion(,I used ORCA tool but still not much clear how to use it, with or with out orca.

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Validate A Textbox Value For The Current Date?

Oct 6, 2010

i have a calendar control whose value will be displayed in a textbox, i need to validate the textbox value to the current date... It should not be less than current date.....

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